Home / 687,316.20-1,031,411.70-403,006.20

Finding the Fourth Proportional to 687,316.20, 1,031,411.70 and 403,006.20

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Solution

The fourth proportional to 687,316.20, 1,031,411.70 and 403,006.20 is: 604,765.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,316.20 : 1,031,411.70 = 403,006.20 : x
  2. Step 2: Convert to fraction form
    687,316.20/1,031,411.70 = 403,006.20/x
  3. Step 3: Cross multiply
    687,316.20x = 1,031,411.70 × 403,006.20
  4. Step 4: Simplify right side
    687,316.20x = 415,665,309,852.54
  5. Step 5: Solve for x
    x = 415,665,309,852.54/687,316.20
  6. Step 6: Final answer
    x = 604,765.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.